ark/lib/default.nix

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Nix
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{ nixos, ... }:
let
inherit (builtins) attrNames attrValues isAttrs readDir listToAttrs mapAttrs;
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inherit (nixos.lib) fold filterAttrs hasSuffix mapAttrs' nameValuePair removeSuffix
recursiveUpdate genAttrs nixosSystem mkForce;
# mapFilterAttrs ::
# (name -> value -> bool )
# (name -> value -> { name = any; value = any; })
# attrs
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mapFilterAttrs = seive: f: attrs: filterAttrs seive (mapAttrs' f attrs);
# Generate an attribute set by mapping a function over a list of values.
genAttrs' = values: f: listToAttrs (map f values);
# pkgImport :: Nixpkgs -> Overlays -> System -> Pkgs
pkgImport = nixpkgs: overlays: system:
import nixpkgs {
inherit system overlays;
config = { allowUnfree = true; };
};
# Convert a list to file paths to attribute set
# that has the filenames stripped of nix extension as keys
# and imported content of the file as value.
#
pathsToImportedAttrs = paths:
genAttrs' paths (path: {
name = removeSuffix ".nix" (baseNameOf path);
value = import path;
});
overlayPaths =
let
overlayDir = ../overlays;
fullPath = name: overlayDir + "/${name}";
in
map fullPath (attrNames (readDir overlayDir));
in
{
inherit mapFilterAttrs genAttrs' pkgImport pathsToImportedAttrs;
overlays = pathsToImportedAttrs overlayPaths;
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recImport = { dir, _import ? base: import "${dir}/${base}.nix" }:
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mapFilterAttrs
(_: v: v != null)
(n: v:
if n != "default.nix" && hasSuffix ".nix" n && v == "regular"
then
let name = removeSuffix ".nix" n; in nameValuePair (name) (_import name)
else
nameValuePair ("") (null))
(readDir dir);
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nixosSystemExtended = { modules, ... } @ args:
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nixosSystem (args // {
modules =
let
modpath = "nixos/modules";
cd = "installer/cd-dvd/installation-cd-minimal-new-kernel.nix";
isoConfig = (nixosSystem
(args // {
modules = modules ++ [
"${nixos}/${modpath}/${cd}"
({ config, ... }: {
isoImage.isoBaseName = "nixos-" + config.networking.hostName;
# confilcts with networking.wireless which might be slightly
# more useful on a stick
networking.networkmanager.enable = mkForce false;
# confilcts with networking.wireless
networking.wireless.iwd.enable = mkForce false;
})
];
})).config;
in
modules ++ [{
system.build = {
iso = isoConfig.system.build.isoImage;
};
}];
});
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nixosModules =
let
# binary cache
cachix = import ../cachix.nix;
cachixAttrs = { inherit cachix; };
# modules
moduleList = import ../modules/list.nix;
modulesAttrs = pathsToImportedAttrs moduleList;
# profiles
profilesList = import ../profiles/list.nix;
profilesAttrs = { profiles = pathsToImportedAttrs profilesList; };
in
recursiveUpdate
(recursiveUpdate cachixAttrs modulesAttrs)
profilesAttrs;
genHomeActivationPackages = hmConfigs:
mapAttrs
(_: x: mapAttrs
(_: cfg: cfg.home.activationPackage)
x)
hmConfigs;
genPackages = { self, pkgs }:
let
inherit (self) overlay overlays;
packagesNames = attrNames (overlay null null)
++ attrNames (fold
(attr: sum: recursiveUpdate sum attr)
{ }
(attrValues
(mapAttrs (_: v: v null null) overlays)
)
);
in
fold
(key: sum: recursiveUpdate sum {
${key} = pkgs.${key};
})
{ }
packagesNames;
}